PT-2018-18700 · Identityserver · Identityserver

Published 2018-03-22 · Updated 2018-04-18 · CVE-2018-8899

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions IdentityServer versions 1.x through 1.5.2 IdentityServer versions 2.x through 2.1.2

Description The issue is related to the encoding of the redirect URI on the authorization response page. In some configurations, this might lead to XSS.

Recommendations For IdentityServer versions 1.x through 1.5.2, update to version 1.5.3 or later. For IdentityServer versions 2.x through 2.1.2, update to version 2.1.3 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2018-8899

Affected Products

Identityserver

References · 6

• https://github.com/IdentityServer/IdentityServer4/commit/21d0da227f50ac102de469a13bc5a15d2cc0f895 · Patch
• https://osv.dev/vulnerability/CVE-2018-8899 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-8899 · Security Note
• https://github.com/IdentityServer/IdentityServer4/issues/2164 · Note
• https://github.com/IdentityServer/IdentityServer4/releases/tag/1.5.3 · Note
• https://github.com/IdentityServer/IdentityServer4/releases/tag/2.1.3 · Note